Marine Engines

Whether fishing, working in ports, transporting passengers or rescuing those in trouble, you should be able to rely on the most essential tool – your boat’s engine - any time, anywhere and regardless of the weather conditions. These engines are some of the most powerful on the water - not because of high RPM pleasure ratings, but because of solid deliverable low end torque and excellent fuel economy. Plus, it's all delivered in a compact, quiet engine package.

Standard Features Optional Features
  • SAE flywheel and housing options 
  • Auxiliary drives and front PTO 
  • Fuel systems with multiple ratings 
  • 12- and 24-volt electrics 
  • 3-5 percent or isochronous governors for gensets 
  • Wet or dry exhaust elbows
  • Keel-cooled or heat-exchanger-cooled 
  • Prewired instrument panel 
  • Engine isolators with optional mounting legs 
  • Long-life dry-type washable air filters 
  • Closed crankcase vent
  • Water-cooled exhaust manifold for cooler, quieter performance
  • Internal coolant passages minimize leaks by eliminating hoses and fittings
  • Low-friction, high-ring pistons for good fuel economy
  • Strong, heavy-duty crankshaft 
  • High-capacity heat exchanger works through adverse conditions 
  • Keel-cooler option for application flexibility 
  • Compact design for easy installation 
  • Replaceable wet liners, precision-joint connecting rod/cap joint, and replaceable valve seats make building easy 
  • Dipstick and oil fill on either side, for faster maintenance 
  • Poly-vee belt drive increases durability and reduces maintenance 
  • Standard balancer shafts eliminate vibration in 4-cylinder engines
M Rating Typical Load Factor Typical Annual Usage Typical Full Power Operation
M1 > 65% Unrestricted Uninterrupted
M2 ≤ 65%
3,000 - 5,000 hr. 16 of each 24 hr.
M3 ≤ 50% 2,000 - 4,000 hr. 4 of each 12 hr.
M4 ≤ 40% 1,000 - 3,000 hr. 1 of each 12 hr.
M5 ≤ 35% 300 - 1,000 hr. 0.5 of each 8 hr.



More info

Propulsion Engines Generator Engines Export Engines Auxiliary Drive Engines
4045 6068
Engine Model Rated HP kW RPM Engine Family
4045DFM50 85 hp 63 kW 2500 rpm PowerTech
4045TFM50 135 hp 101 kW 2500 rpm PowerTech
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